20454889

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{337}}^1$

素因数の和:409

約数の個数: 32

約数和(自身を含む): 27256320

約数和(自身を除く): 6801431

約数列:

[1, 7, 13, 23, 29, 91, 161, 203, 299, 337, 377, 667, 2093, 2359, 2639, 4381, 4669, 7751, 8671, 9773, 30667, 54257, 60697, 68411, 100763, 127049, 224779, 705341, 889343, 1573453, 2922127, 20454889]

約数ペア:

[(1, 20454889), (7, 2922127), (13, 1573453), (23, 889343), (29, 705341), (91, 224779), (161, 127049), (203, 100763), (299, 68411), (337, 60697), (377, 54257), (667, 30667), (2093, 9773), (2359, 8671), (2639, 7751), (4381, 4669)]